src/test/compile-fail/imports/duplicate.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 mod a {
  12     pub fn foo() {}
  13 }
  14
  15 mod b {
  16     pub fn foo() {}
  17 }
  18
  19 mod c {
  20     pub use a::foo;
  21 }
  22
  23 mod d {
  24     use a::foo; //~ NOTE previous import
  25     use a::foo; //~ ERROR `foo` has already been imported
  26                 //~| NOTE already imported
  27 }
  28
  29 mod e {
  30     pub use a::*;
  31     pub use c::*; // ok
  32 }
  33
  34 mod f {
  35     pub use a::*; //~ NOTE `foo` could resolve to the name imported here
  36     pub use b::*; //~ NOTE `foo` could also resolve to the name imported here
  37 }
  38
  39 mod g {
  40     pub use a::*; //~ NOTE `foo` could resolve to the name imported here
  41     pub use f::*; //~ NOTE `foo` could also resolve to the name imported here
  42 }
  43
  44 fn main() {
  45     e::foo();
  46     f::foo(); //~ ERROR `foo` is ambiguous
  47               //~| NOTE consider adding an explicit import of `foo` to disambiguate
  48     g::foo(); //~ ERROR `foo` is ambiguous
  49               //~| NOTE consider adding an explicit import of `foo` to disambiguate
  50 }
  51
  52 mod ambiguous_module_errors {
  53     pub mod m1 { pub use super::m1 as foo; }
  54     pub mod m2 { pub use super::m2 as foo; }
  55
  56     use self::m1::*; //~ NOTE
  57                      //~| NOTE
  58     use self::m2::*; //~ NOTE
  59                      //~| NOTE
  60
  61     use self::foo::bar; //~ ERROR `foo` is ambiguous
  62                         //~| NOTE
  63
  64     fn f() {
  65         foo::bar(); //~ ERROR `foo` is ambiguous
  66                     //~| NOTE
  67     }
  68 }